Research paperLife cycle cost estimation and environmental valuation of coal mine tailings management
VALUATION METHODOLOGIES FOR MINES AND …
ther authors discuss discounted cash flow (DCF) methodologies and net present value (NPV). They all recommend DCF as the primary method for valuing operating mines, or mineral …
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Recycling and Reuse of Mine Tailings: A Review of …
It is remarkable that a greater effort is still needed to increase the recycling of solid waste. Mine tailings technologies can be improved, where there are many discrepancies in recycling rates and application of waste reduction technologies between a few developed countries (US, Japan, Western Europe, China) and most countries [117,118].
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A biochar selection method for remediating heavy metal
Approximately 390,000 abandoned mines across the US pose considerable, pervasive risks to human and environmental health; world-wide the problem is even greater. Lime, organic materials, and other amendments have been used to decrease metal bioavailability (e.g., Cd, Cu, Mn, Ni, Zn) in contaminated mine wastes and to promote plant community …
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Recovery of valuable elements from mine tailings
Recovery of valuable elements from mine tailings W. Flores1*, H. Contreras2, P. Garrido3, J. Concha4 y P. Espinoza5 ... CI-JRI began to develop studies with the purpose of recovering elements of value from tailings, mainly associated with the strategic elements defined by the European Union. ... Tailing 4 >100 >1000 <1000 >500 >10 <5 >0.5 <0.5 ...
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Mine Tailings: The Cornerstone of Safe Mining Operations
One of the most common methods for managing mine tailings is the construction of tailings ponds or tailings storage facilities (TSFs). These large-scale repositories serve as containment areas for the collected material, allowing for the settling of solid particles and the retention of water before eventual disposal or treatment.
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Valuation Methods and Risk Adjustments for Mining Assets
The cost approach in mining valuation determines the value of a mining asset based on development and operational costs. This method is useful when market data is scarce or the asset is unique, making comparables hard to find. By evaluating costs incurred in bringing a mining project to its current state, stakeholders can estimate its value.
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About – Critical Metals in Copper Mine Tailings
Consequently, better treatment of historic and modern copper tailings represents an enormous opportunity to recover critical elements, while also adding value by reducing economic and environmental liabilities and mitigating associated public concerns. This challenge will only increase going forward as more copper mining produces more tailings.
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Bioleaching of Metal-Polluted Mine Tailings: A Comparative
Despite their potential environmental hazards, mine tailings also hold considerable value due to their high content of valuable metals [2,3]. ... These results suggest that the EK-percolation system could be a competitive method for in situ bioleaching of mine tailings in low-permeability soils. However, additional factors not studied in the ...
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How to generate value from tailings with reprocessing …
Whether driven by regulatory compliances, tailings dam failure and water scarcity, mine tailings can well become a strong business case in the near future. Due to growing mining volumes, global tailings generation was …
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Evaluation of acid mine drainage (AMD) from tailings and their
The pyrite content in the mine tailings sample was approximately similar in the three estimation methods; however, in the case of the chemical methods there is a difference of 0.5%, probably due to the fact that aqua regia is chemically more aggressive and therefore, dissolves a greater amount of iron as seen in Table 5 for the reference sample.
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Life cycle cost estimation and environmental valuation …
This study describes the life cycle cost (LCC) analysis and environmental valuation for several coal mine tailings management scenarios. The economic feasibility of six different options was...
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Cost Approach Methods for Mineral Property Valuation
the Depreciated Replacement Cost method. • For market valuations, the MEE, Appraised Value, and Geoscience Matrix methods should be applied with caution. Two or more methods should be applied, preferably from two or more approaches. • The Rural Cost Appraisal method is a particularly powerful valuation method. However, we must await
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Methods for the disposal and storage of mine tailings
The paste tailings disposal method produces a high viscosity, non-Newtonian fluid, characterised by paste copper tailings of 65-80% solid weight concentrations (Cw) and a water recovery rate of ...
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(PDF) A Comparative Study of Valuation …
Tail margin method An extension of the DCF NPV method of valuation led to the development of the tail margin valuation method (Lilford, 2002). Before applying this method, consider that a LoM plan or mining profile can be estimated with …
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Marine and Riverine Discharges of Mine Tailings
Mr. Edward Kleverlaan, and the support by the UNEP-GPA for their interest in mine tailing disposal methods and possible impacts to the marine and riverine environments. In addition, it is important to recognize Canada and the United Kingdom as the primary funders of this effort, acknowledging their ...
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About Tailings – Global Tailings Review
There is no one-size-fits-all solution, each tailings storage facility is unique. Identifying the most appropriate method of tailings construction is important to ensure the safe and sustainable operation of a facility. Tailings storage facilities follow one of three wall construction designs: these are downstream, upstream and centreline.
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Evaluation of soil intervention values in mine tailings in northern
In a mine site, the mineral of interest constitutes only a small fraction of the mined material (Wills & Finch, 2015), because of this the mining process generates large volumes of waste, originating a great amount of tailings and mine waste in general, which contain a high variety of heavy metals and diversity of concentration levels (Burges ...
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An extensive review on restoration technologies for mining tailings
Acid production decreases the pH value of the tailings soil and increases the solubility of heavy metals. The low pH and high heavy metal contents in the tailings soil can cause plant growth disorders, the so-called biotoxicity. ... and it is also the most promising method for restoring mine tailings. Phytoremediation can be applied to large ...
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Cost Approach Methods for Mineral Property Valuation
Rural Cost Appraisal method • Adjust transactions for time, location, etc. • Ratio analyses or simultaneous equations are used to calculate the unit value of the components of the subject …
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Comprehensive Assessment of Environmental Behavior of Mine Tailings …
The substantial volumes of tailings produced during ore beneficiation present significant challenges for sustainable management due to potential public health hazards, particularly from metal leaching. The risk associated with tailings varies greatly depending on their mineralogical composition and climatic conditions. If tailings are classified as a non-hazardous …
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Feasibility of tailings retreatment to unlock value and create
pH of tailings The Louis Moore Mine tailings have pH values ranging from 7 to 9, averaging 8. The neutral to weak basic conditions throughout the tailings dump can be attributed to the presence of dolomite (primarily associated with the mineralization) in the tailings. Residual lime used in pH adjustment during cyanidation may
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Method for capping mine waste and tailing deposits
A method for providing a composite capping cover for maintaining the surface of a sulphide bearing tailing and mine waste containing deposit moist thereby substantially eliminating oxidation of the sulphidic particulate in the deposit and the formation of heavy metal salts. The moisture is provided by atmospheric precipitation. The composite capping cover comprises a fine …
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How to generate value from tailings with reprocessing …
With reprocessing, the mining companies can set the agenda to transform the tailings ponds from a liability into an asset. Find value in reprocessing tailings. Whether driven by regulatory compliances, tailings dam …
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Towards mine tailings valorization: Recovery of critical materials …
To achieve a circular economy model, the valorization of mine tailings is crucial for the mining industry, which needs to improve its processes to minimize its environmental …
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Mine Tailing
"mine tailings" is a generic term which refers to a range of matrices such as mixtures of crushed rock, processing fluids from mills, washeries, or concentrated materials that remain after extracting the mine resource (Kossoff et al., 2014). ... populated or of natural value, during major dam failures, the leaching of toxic chemicals and ...
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Valorisation of mine waste -Part I: Characteristics of, and …
Mine tailings, especially historical ones, can contain economically feasible resources, and given the right condition, such tailings could be reutilised through a waste valorisation concept.
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Valuation Methods and Risk Adjustments for Mining Assets
By evaluating costs incurred in bringing a mining project to its current state, stakeholders can estimate its value. Key components include historical expenditures such as …
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Recycling and Reuse of Mine Tailings: A Review of …
Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by 2025. Adding to this, the …
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Utilization of Copper Mine Tailings as Road Construction …
The reactivity and resultant geopolymer of mine tailings can be positively influenced by several pretreatment methods, including as mechanical activation, calcination, and alkali melting. These pretreatment techniques induce microstructural and mineralogical alterations in the mine tailings, further enhancing their reactivity.
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Geotechnical Properties of Mine Tailings | Journal of …
In order to maintain the normal mining operations, several methods are proposed for tailing disposal, including disposal of dry or thickened tailings in impoundments or free-standing piles, backfilling underground mine …
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